Fire-resistant and anti-corrosion composite materials for steel structures

Abstract

The invention provides a fireproof and corrosion-prevention composite material for a steel structure. The fireproof and corrosion-prevention composite material sequentially comprises a first fiber reinforced concrete layer, a first fiber reinforcement layer, a first fireproof fiber layer, a first fluroresin layer, a second fluroresin layer, a second fireproof fiber layer, a third fireproof fiber layer, a second fiber reinforcement layer and a fourth fluroresin layer from inside to outside, wherein the first fluroresin layer, the second fluroresin layer and the fourth fluroresin layer are dopedwith fireproof grains; the second fiber reinforcement layer is doped with activated carbon grains and nano silicon dioxide grains; the third fireproof fiber layer is doped with the activated carbon grains and the nano silicon dioxide grains. According to the fireproof and corrosion-prevention composite material for the steel structure, the fiber reinforcement layers, a corrosion-prevention layerand fireproof layers are arranged so that the composite material has high mechanical properties and also has fireproof and corrosion-prevention properties. According to the fireproof and corrosion-prevention composite material, the fireproof grains are added into the corrosion-prevention layer so that the fireproof performance of the corrosion-prevention layer is improved. The activated carbon grains are added into the fireproof layers and the reinforcement layers so that the composite material can adsorb toxic gas generated by ablation of the corrosion-prevention layer.

Description

technical field [0001] The invention relates to a fireproof and anticorrosion composite material, in particular to a fireproof and anticorrosion composite material for steel structures. Background technique [0002] Large-scale steel structures such as: lightning rod towers, offshore lighthouses, large reservoir gates, water supply towers, offshore oil production facilities, tank cars, spherical tanks, storage tanks, oil tanks, carbonization towers, heat exchangers, chimneys, containers, ship hulls, offshore platform steel Structures, etc., are long-term in the corrosive environment of marine atmosphere and industrial atmosphere. Long-term coating protection is essential for long-term use without extensive repairs. [0003] Currently commonly used coatings include: metal zinc and aluminum coatings, metal zinc and aluminum coatings have great resistance to atmospheric corrosion. Spray zinc or aluminum on the steel components. Zinc and aluminum are negative potentials and fo...

AI Technical Summary

Problems solved by technology

[0004] However, the use of metal zinc and aluminum coatings for anti-corrosion in the prior art has the following defects: First, the metal zinc and aluminum coatings have high requirements for construction. At present, the anti-corrosion of more important steel structure parts requires professional testing agencies for inspection and acceptance. , if the acceptance fails, the anode protection needs to be redone, which will greatly increase the cost of anti-corrosion. In addition, only coating metal zinc and aluminum coatings cannot make the steel structure have fire resistance, resulting in a gap between fire resistance and corrosion resistance. Can't do both

Images